const createError = require('http-errors');
const express = require('express');
const path = require('path')
const fs = require('fs')
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const ENV = process.env.NODE_ENV

const session = require('express-session')
const RedisStore = require('connect-redis')(session)
const redisClient = require('./db/redis')

const blogsRouter = require('./routes/blogs')
const usersRouter = require('./routes/users')

const app = express();

// view engine setup
// app.set('views', path.join(__dirname, 'views'));
// app.set('view engine', 'jade');

// log
if (ENV !== 'production') {
  app.use(logger('dev'))
} else {
  const logFileName = path.join(__dirname, 'logs', 'access.log')
  const writeStream = fs.createWriteStream(logFileName)
  app.use(logger('combined', {
    stream: writeStream
  }))
}

app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
// app.use(express.static(path.join(__dirname, 'public')));

const sessionStrore = new RedisStore({
  client: redisClient
})
app.use(session({
  secret: 'maroonstar_123#123#',
  cookie: {
    path: '/',  // 默认配置
    httpOnly: true,  // 默认配置
    maxAge: 24 * 60 * 60 * 1000
  },
  store: sessionStrore
}))

// router
app.use('/api/blog', blogsRouter)
app.use('/api/user', usersRouter)

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
